[systemd-bugs] [Bug 90662] New: cryptsetup hangs in initramfs

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=90662

            Bug ID: 90662
           Summary: cryptsetup hangs in initramfs
           Product: systemd
           Version: unspecified
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: general
          Assignee: systemd-bugs at lists.freedesktop.org
          Reporter: evangelos at foutrelis.com
        QA Contact: systemd-bugs at lists.freedesktop.org

Created attachment 116046
  --> https://bugs.freedesktop.org/attachment.cgi?id=116046&action=edit
strace of the cryptsetup command that hangs

As part of the process of decrypting the root volume during early boot,
'cryptsetup open --type luks /path/to/dev root' is executed while we're still
in the initramfs and before switch_root is called.

Starting with systemd 220 this call hangs and boot never continues. Attached is
a screen shot of the end of the strace output.

Git bisect shows the *parent* commit of
https://github.com/systemd/systemd/commit/cb49a4f2dd53 as the last working
revision. While testing commit cb49a4f2dd53, 'udevadm settle' would hang,
though that's not the case with v220 or git master. I might check the range
cb49a4f2dd53..master to see if there's a point where the both the 'udevadm
settle' command and cryptsetup work.

This is possibly related to bug 90656.

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